3/8 in.-16 x 3-1/2 in. Black Exterior Carriage Bolts (25-Pack)

Carriage bolts are designed to fasten a wooden face to either a wood or metal frame. Its flat head is designed to eliminate the need for a washer and provide a semi-flush finish to applications. The square underside of the head is self-locking to eliminate spinning and the need for a driving tool. Parts are finished with a black ceramic coating that provides superior corrosion resistance. This black finish is designed to match the latest trends in black-finished hardware. These bolts measure 3/8 in. W and 3.5 in. L. They feature 16 screw threads per inch.|Carriage bolts are designed to fasten a wooden face to either wood or metal|Black ceramic coating offers superior resistance to rust and corrosion|Square underside of the head is self locking to eliminate the need for a driving tool|Head is designed to eliminate the need for a washer|Smooth, round, low-profile head provides a semi-flush finish to applications|Parts carry a limited lifetime warranty